Maple Leafs coach Randy Carlyle said he is happy that forwards James van Riemsdyk and Phil Kessel have been named to the U.S. Olympic team.However, Carlyle also expressed reservations about how their participation in Sochi will affect their play coming back to the NHL.He said that from his experience, the Leaf forwards will have trouble coming back from the emotional high of competing for their country.“We think it's a positive.,” Carlyle said Saturday morning at the Leaf skate prior to the game against the New York Rangers at the Air Canada Centre. “We support them. It's a chance of a lifetime.”However, he said that as the Leaf coach, he has to think selfishly as well.“If we want to be selfish about the Toronto Maple Leafs, sometimes those things don't work out the way you'd like them to work out because we know they're going to another level of hockey, the highest level at the Olympics. Coming back to here after, sometimes the emotions are flat. Some people don't have anything left.”The Leaf coach, who spent seven seasons coaching the Anaheim Ducks before he was hired by the Maple Leafs on March 2, 2012, noticed a drop off in the emotional commitment from players who left to play in the Olympics in 2010.